You might be in there for only a few seconds - in real time - but in your head it goes on for hours. It is an experience that's hard to describe, riding inside of a big, grinding wave. Often you're riding so deep inside the tube, you don't make it out. You take a terrible wipe out. What matters is when you're in there, it's the time interval when you're inside the wave, time enters paces, a zone of its own. The only reality is what's happening right then.